Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641861 | .mu.opioid receptor ligands: agonists and antagonists | Richard A. Houghten | 1997-06-24 |
| 5610271 | Kappa receptor selective opioid peptides | Richard A. Houghten | 1997-03-11 |